AISLING CAPITAL II, LP
-------------------- -------------
CUSIP No. ▇▇▇▇▇▇▇▇▇ Page 16 of 16
-------------------- -------------
EXHIBIT 1
---------
JOINT FILING AGREEMENT
Each of the undersigned hereby acknowledges and agrees, in compliance
with the provisions of Rule 13d-1(k)(1) promulgated under the Securities
Exchange Act of 1934, as amended, that the Schedule 13D to which this Agreement
is attached as an Exhibit (the "Schedule 13D"), and any amendments thereto,
will be filed with the Securities and Exchange Commission jointly on behalf of
the undersigned. This Agreement may be executed in one or more counterparts.
Date: April 12, 2007
AISLING CAPITAL II, LP
By: Aisling Capital Partners, LP
General Partner
By: Aisling Capital Partners LLC
Managing Member
By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇
---------------------------------
Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇
Title: Managing Member and Senior
Managing Director
AISLING CAPITAL PARTNERS, LP
By: Aisling Capital Partners LLC
Managing Member
By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇
---------------------------------
Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇
Title: Managing Member and Senior
Managing Director
AISLING CAPITAL PARTNERS LLC
By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇
------------------------------------------
Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇
Title: Managing Member and Senior
Managing Director
/s/ ▇▇▇▇▇ ▇▇▇▇
----------------------------------------------
▇▇▇▇▇ ▇▇▇▇
/s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇
----------------------------------------------
▇▇▇▇▇▇ ▇▇▇▇▇▇▇
/s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇
----------------------------------------------
▇▇▇▇▇▇ ▇▇▇▇▇▇